Scratched cam bearing, can I run it? - LS1TECH



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Scratched cam bearing, can I run it?

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Old 03-11-2017, 05:07 PM   #1
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Default Scratched cam bearing, can I run it?

Can I smooth this out and run it? Not sure, but I think I scratched it pulling the cam. Opinions?

If I can run it, do I smooth it with a green scotch bright? Or do I take my motor in and have them all replaced? Engine is already out of the car, but machine shops are 1.5 hours away.
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Old 03-11-2017, 05:55 PM   #2
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Replace them, it's not worth risking damaging the cam bore or camshaft. Just replace them
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Old 03-12-2017, 09:30 PM   #3
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Can I smooth this out and run it? Not sure, but I think I scratched it pulling the cam. Opinions?

If I can run it, do I smooth it with a green scotch bright? Or do I take my motor in and have them all replaced? Engine is already out of the car, but machine shops are 1.5 hours away.
Don't waste your time, those scratches are nothing. Trust me you don't want to get into cam bearings on these engine unless its absolutely necessary. I wouldn't touch them and end up doing real damage. Cam bearings are soft, those scratches won't do anything!
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Old 03-12-2017, 09:42 PM   #4
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Don't waste your time, those scratches are nothing. Trust me you don't want to get into cam bearings on these engine unless its absolutely necessary. I wouldn't touch them and end up doing real damage. Cam bearings are soft, those scratches won't do anything!
For once, I agree with this guy.
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Old 03-12-2017, 10:08 PM   #5
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I hit it with a scotchbright and smoothed it out, but my fingernail still catches. Still good to run?
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Old 03-12-2017, 10:27 PM   #6
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The bearings soft so that wont hurt the cam, run it.
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Old 03-12-2017, 10:36 PM   #7
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Should I try to smooth it out some more? What about just replacing the front one? Just want to do what's best...
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Old 03-12-2017, 10:41 PM   #8
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Just leave it be
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Old 03-12-2017, 10:47 PM   #9
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I hit it with a scotchbright and smoothed it out, but my fingernail still catches. Still good to run?
Let it be
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Old 03-12-2017, 10:52 PM   #10
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For once, I agree with this guy.
hey no one agrees all the time
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Old 03-13-2017, 08:03 AM   #11
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Whisper words of wisdom, let it be!!

Chad
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Old 03-13-2017, 08:16 AM   #12
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If its a scratch that dosent have any more high points sense you smoothed it out itll be fine. The low area will just hold oil in that spot. But even so itll be fine. They soft
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Old 03-13-2017, 10:58 AM   #13
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What about the little gouge as well? Run it? Thanks guys... makes my concern go way down. I was a bit annoyed at first at the idea of having to take my engine in.
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Old 03-13-2017, 11:53 AM   #14
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You can probably get away with it, but my ocd would never let me, I would hate to constantly have the thought of a scratched cam bearing in my motor with a small chance of chewing cam, I would go nuts
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Old 03-13-2017, 06:04 PM   #15
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The cam bearing itself will never chew the cam, as the cam is MUCH harder than the bearing. Having said that, there is a possibility of losing a small amount of oil pressure IF the scratch goes to the edge of the bearing and bleeds oil off before it can do its job. It would have to be a DEEP scratch to do that. Pure speculation, but a possibility.
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Old 03-13-2017, 07:31 PM   #16
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its all to easy for cam bearings to get put in wrong. run it.
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Old 03-14-2017, 08:14 AM   #17
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The cam bearing itself will never chew the cam, as the cam is MUCH harder than the bearing. Having said that, there is a possibility of losing a small amount of oil pressure IF the scratch goes to the edge of the bearing and bleeds oil off before it can do its job. It would have to be a DEEP scratch to do that. Pure speculation, but a possibility.
It does go to the edge of the bearing. Should I just have a shop install new ones? I'm taking my heads in anyway.
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Old 03-14-2017, 08:15 AM   #18
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Bearings are in good shape other than this. Maybe 20k miles on them and no copper showing.
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Old 03-14-2017, 08:31 AM   #19
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I would say a light surface scratch would be of no consequence, but the call is ultimately yours. It is your peace of mind at stake here.
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Old 03-14-2017, 09:12 PM   #20
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It does go to the edge of the bearing. Should I just have a shop install new ones? I'm taking my heads in anyway.
Wow ask for advice then drag it out asking over and over and over



WHAT DON"T YOU UNDERSTAND ABOUT LET IT THE EFF BE?

My advice to you is DON"T ASK FOR ANY!
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